369 ?? Is it supposed to be used by pulling up on the handle or pushing
down? Mounted on a board, looks like push down. Some kind of cobbler's
tool?
Reminds me of a tool used for spreading battery cable terminals, but that
wouldn't be mounted like that.

Yes, the handle is meant to push down, though the jaws don't close very much
when it is depressed, I posted a photo of it in this position on the answer
page.

Rob